We have just posted our review of the Thermaltake TR2 RX 750 Power Supply.  This is a mainstream PSU that has a few modular cables and should be able to run almost any two-card CrossfireX or SLI setup.  It's not the fanciest PSU we've looked at this past year, but in terms of performance for the price, it could be one of the best valued products around.  Please check out our review for all the details.